diff -r be004d8634e1 -r 009c05621fba gobm65.go
--- a/gobm65.go	Sun Feb 26 15:29:01 2017 +0100
+++ b/gobm65.go	Sun Feb 26 15:37:12 2017 +0100
@@ -188,7 +188,7 @@
 	}
 
 	s.Close()
-	return items, nil
+	return mergeItems(items, []measurement{}), nil
 }
 
 func loadFromJSONFile(filename string) (items []measurement, err error) {